Bricks also have the characteristics of light weight and excellent thermal insulation performance, and are widely used in refractory linings or insulation layers on the hot surfaces of various thermal equipment.

Mullite lightweight bricks can withstand high temperatures of 1790 °C or higher. Mullite lightweight brick is a refractory material with high refractoriness, and the refractory temperature can reach more than 1790 °C.

Mullite lightweight bricks have many excellent properties. The starting temperature of load softening is between 1600-1700 °C, and the compressive strength at room temperature is 70-260MPa, which has good thermal shock resistance. In addition, mullite lightweight bricks also have the characteristics of light weight and excellent thermal insulation performance, and are widely used in the hot surface refractory lining or insulation layer of various thermal equipment.

Mullite lightweight bricks are mainly composed of aluminum trioxide and silica, with mullite (3 Al2O3-2SiO2) as the main crystal phase. Its lightweight nature is due to the micropores formed during the decomposition process of bluestone, the raw material used in production, which not only improve thermal insulation but also reduce thermal conductivity